Version 2.0.0 post-comp release

This is a quick post-comp release to improve game text where I just didn't have time in 4 hours. Thanks to all who voted and left comments. I got a lot of engagement. Happy with my placing too!

--General narrative text improvement (fixed too-short descriptions or bad grammar etc.)

--"AT LOCATION X" or "HERE" in THINK

-- _ GHOST commands and so forth are implemented,so you can observe NPCs, even if they're not super active.

--INVENTORY says you don't drop or take any items

--obfuscated Adventuron error for point scoring commands (for instance, if it is ABC DEF, we now get the standard parser error instead of a confusing one which may be a quasi-spoiler.)

I wanted to push myself to see if THINK could contain "You guessed ABC (unknown)"/"You guessed (unknown) DEF"/"You guessed ABC DEF separately" ... I have the code locally but want to test it. Some of the testing brought about narrative text changes for this version 2.0.0, though.